NAME

List::Permute::Limit - Permute all items list, with limit of number of items per result item

VERSION

This document describes version 0.001 of List::Permute::Limit (from Perl distribution List-Permute-Limit), released on 2019-12-31.

SYNOPSIS

use List::Permute::Limit qw(permute_iter permute);

# iterator interface
my $iter = permute_iter(items=>["zero","one","two","three"], nitems=>2);
while (my $ary = $iter->()) {
    print "@{$ary}\n";
}

will print:

zero zero
zero one
zero two
zero three
one zero
one one
one two
one three
two zero
two one
two two
two three
three zero
three one
three two
three three

To return the whole permutation in a list:

# array interface
my @res = permute(items=>["zero","one","two","three"], nitems=>2);
# => (
#   ["zero", "zero"],
#   ["zero", "one"],
#   ["zero", "two"],
#   ["zero", "three"],
#   ["one", "zero"],
#   ["one", "one"],
#   ["one", "two"],
#   ["one", "three"],
#   ["two", "zero"],
#   ["two", "one"],
#   ["two", "two"],
#   ["two", "three"],
#   ["three", "zero"],
#   ["three", "one"],
#   ["three", "two"],
#   ["three", "three"],
# )

DESCRIPTION

This is just yet another list permutor module, with a limit on the number of items per result.

FUNCTIONS

permute

Usage:

permute(%args) -> any

This function is not exported by default, but exportable.

Arguments ('*' denotes required arguments):

• items* => array

• nitems => posint

  Number of items of each permutation result.

Return value: (any)

permute_iter

Usage:

permute_iter(%args) -> any

This function is not exported by default, but exportable.

Arguments ('*' denotes required arguments):

• items* => array

• nitems => posint

  Number of items of each permutation result.

Return value: (any)

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/List-Permute-Limit.

SOURCE

Source repository is at https://github.com/perlancar/perl-List-Permute-Limit.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=List-Permute-Limit

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.

SEE ALSO

List::Permutor, Math::Permute::List

Algorithm::Permute and variants.

Permute::Named, Permute::Named::Iter

AUTHOR

perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2018 by perlancar@cpan.org.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

cpanm List::Permute::Limit

perl -MCPAN -e shell
install List::Permute::Limit